Topographic Maps of Imperial County, California

June 6, 2007

This collection contains images of all 7.5-minute USGS topographic maps
of Imperial County, California.

To find the desired image, look on the layout map below.

To view an image, click on the name of the map in the list at the end
of this page. CAUTION: Most versions of Windows Internet Explorer
won't display
these images because they are too large. If you have this problem,
download the image and use your favorite image software (or the Windows
Picture and Fax Viewer) to view it. Or you can download the Mozilla Firefox browser
from www.mozilla.com.

If your browser does clickable maps, you can also view an image by
clicking on it in the layout map.

To download an image, right-click on the name and select "Save Link"
or "Save Target" from the context menu.

The scale of the images is 528 pixels per mile.

The file LIST.TXT contains a
comma-delimited list of all 7.5-minute
maps. The fields in each list entry are as follows:

name of map

latitude degrees

latitude minutes

longitude degrees

longitude minutes

The latitude and longitude are those of the southeast corner of the
mapped area.

The list can be imported into most spreadsheets and database management
systems.

The IN-KOH-PAH GORGE map has two entries LIST.TXT.
It contains slightly more than the standard 7.5 minutes
of latitude and longitude. The excess is an area at the edge of United
States that is not large enough to merit a separate map, but it is
listed in LIST.TXT as though it were a separate map
with the same name.

The USGS topographic maps, the downloaded images, and the images in this
collection are all in the public domain. You may use them for any legal
purpose without permission or royalties. Although the maps are generally
quite accurate, many of them are significantly out of date.